ALEXANDRIA, Va., April 9 -- United States Patent no. 12,271,146, issued on April 8, was assigned to CANON K.K. (Tokyo).
"Process cartridge" was invented by Noriyuki Komatsu (Shizuoka, Japan), Tomonori Mori (Kanagawa, Japan), Teruhiko Sasaki (Shizuoka, Japan), Makoto Hayashida (Shizuoka, Japan), Naoki Maeda (Shizuoka, Japan) and Satoru Harada (Aichi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A developing unit, which is attachable to and detachable from a photosensitive member unit, includes: a developing roller; a housing in which a holding space that holds toner is formed; and a pressing receiving portion that receives pressing force from a pressing member. The housing includes a first bottom port...